JP3132014B2 - Communication device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication device suitable for being applied to a cordless telephone device connected to a digital line such as ISDN.

[0002]

2. Description of the Related Art Conventionally, within a certain range (for example, a radius of 100
m) and various cordless telephones that can be freely moved have been put to practical use. This cordless telephone is composed of a master unit directly connected to a telephone line and a slave unit carried by a caller, and wireless communication is performed between the master unit and the slave unit. In this case, there is a case where a plurality of slave units can be installed for one master unit.

FIG. 6 shows an example of the configuration of a cordless telephone connected to a general telephone line. This cordless telephone is a system in which three handsets can be used. The telephone line interface 3 of the parent device 2 is connected. Then, the wireless transmission / reception unit 4 is connected to the telephone line interface 3, and the processing in the telephone line interface 3 and the wireless transmission / reception unit 4 is performed under the control of the control unit 5. That is, under the control of the control unit 5, after a signal transmitted from the telephone station side via the telephone line 1 is received by the telephone line interface 3, the received signal is transmitted by the wireless transmission / reception unit 4 for wireless transmission of a predetermined channel. The signal is modulated, and the modulated signal is transmitted from the antenna 6 to any of the slave units 7, 8, and 9 as a wireless signal. In this case, each of the slave units 7, 8, and 9 is provided with a speaker for communication, a microphone, a dial key, and the like. Each of the slave units 7, 8, and 9 has an antenna 7 connected to the respective slave unit 7, 8, and 9.
This wireless signal is received by a, 8a, and 9a, and a circuit in each of the slave units 7, 8, and 9 determines to which of the slave units the transmission is based on a control signal included in the wireless signal. Then, when it is determined which child device it is, the reception process is performed by the child device, and the sound is reproduced from the speaker of this child device.

[0004] Further, the sound picked up by the microphones of the slave units 7, 8, and 9 is modulated into a signal for wireless transmission by a circuit in each of the slave units 7, 8, and 9, and the modulated signal is modulated. Data is transmitted from the antennas 7a, 8a, 9a. Then, the transmission signal is received by the wireless transmission / reception unit 4 of the base unit 2 via the antenna 6 and transmitted to the telephone line 1 via the telephone line interface 3. In this way, the child device 7,
The so-called outside line communication is made possible at 8,9.

[0005] Further, by transmitting a radio signal from each of the slave units 7, 8, 9 to the master unit 2 by designating any other slave unit, a call (so-called extension call) between the respective slave units is enabled. Has become.

On the other hand, as a telephone line, ISDN (Inte
graded ServicesDigital Ne
An operation of a digital line called “work: integrated service digital network” has been started. By using this ISDN, various data can be efficiently transmitted, and various controls such as designation of a receiving terminal can be performed. That is, by performing an operation of specifying a terminal connected to each subscriber side using a sub address, a direct dial-in number, or the like, only a desired terminal among a plurality of terminals connected to one line is called. Can be.

[0007]

By the way, when a telephone device installed in each home or the like is connected to the ISDN, an IDN is required.
An SDN telephone device is required. That is, for example, when the above-mentioned cordless telephone is connected to ISDN, the telephone line interface 3 needs to be an ISDN interface . By doing so, at least each of the slave units 7, 8, and 9 can make a call via the ISDN.

However, in the case of a cordless telephone, simply providing the telephone line interface 3 with the ISDN interface cannot provide services such as the above-mentioned terminal designation that is possible with ISDN. That is, unless a circuit for discriminating an ISDN subaddress, a direct dial-in number, and the like is provided on each of the slave units 7, 8, and 9 side, services such as terminal designation cannot be received. Can only call
DN is not used effectively. However, if the telephone number discriminating circuit corresponding to ISDN is provided in all the slaves, the structure of the slaves becomes complicated, and there is a disadvantage that the system configuration of the cordless telephone becomes large. Also,
A similar inconvenience occurs not only in a cordless telephone but also in a case where a telephone device in which a plurality of child devices are connected to a parent device by signal lines is connected to an ISDN.

An object of the present invention is to provide a communication device having a plurality of slave units, such as a cordless telephone, with a simple configuration using ISDN.
It is to be able to correspond to digital lines such as.

[0010]

The present invention comprises, as shown in FIG. 1, for example, a main telephone unit connected to an ISDN, and a plurality of sub telephone units which transmit and receive wirelessly to and from this main telephone unit. In the communication device, the main telephone device is provided with a memory 22 for storing the attribute, sub-address, and direct dial-in number of each sub-telephone device, and the main telephone device detects the attribute, sub-address, or direct dial-in number included in the incoming signal when a call is received. Then , the sub telephone device corresponding to the attribute, the sub address or the direct dial-in number is determined from the data stored in the memory, and the discrimination signal is transmitted to the sub telephone device. Also
The present invention relates to a main telephone device connected to a digital line,
Multiple sub-telephone devices that can transmit and receive wirelessly with the main telephone device
In a communication device comprising:
Attributes, subaddress and direct dial-in number
And a memory 22 for storing
When calling from one of the secondary telephone devices, the primary telephone device
Attribute, sub address or
Reads the direct dial-in number and checks whether it is a secondary telephone device
And add it to the digital line
It is something that has been done.

[0011]

In this manner, the main telephone device can control the sub-telephone device based on the attribute, subaddress or direct dial-in number included in the incoming signal, and each sub-telephone device can control the attribute of the incoming signal. , Without detecting the sub-address or the direct dial-in number, a service such as selection of a receiving terminal can be received, and the configuration of each sub telephone device can be simplified.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

In this embodiment, a cordless telephone is connected to an ISDN. FIG. 1 shows a base unit of a cordless telephone according to one embodiment. In the figure, reference numeral 10 denotes the whole base unit.
Connected to N line i. That is, the terminal of the ISDN line i is connected to the ISDN interface 11 in the base unit 10 of the cordless telephone. The ISDN interface 11 receives a signal transmitted from the telephone station via the communication line i and supplies the signal to a required circuit. Further, the transmission signal supplied from the circuit in the base unit 10 to the ISDN interface 11 is converted into an ISDN transmission signal and transmitted to the ISDN line i. in this case,
The control unit 12 of the base unit 10 is connected to the ISDN interface 11, and the incoming and outgoing calls are processed under the control of the control unit 12. At this time, when the audio signal is converted into digital data and transmitted on the ISDN line i,
The digital data is converted into an analog audio signal by the ISDN interface 11. When transmitting an analog voice signal to the ISDN line i, the signal is converted into digital data to form a transmission signal.

In the figure, reference numeral 13 denotes a transmitting unit. The transmitting unit 13 is supplied with a signal to be transmitted to a slave unit, which will be described later, and the frequency signal supplied from the frequency synthesizer 14 converts the transmitted signal to a predetermined frequency ( (A predetermined channel), and the modulated signal is wirelessly transmitted from the antenna 16 to a predetermined slave unit. The wireless signal received from the slave unit by the antenna 16 is demodulated by the receiving unit 16. In this case, a frequency signal is also supplied from the frequency synthesizer 14 to the receiving unit 16, and demodulation from a predetermined transmission channel is performed based on the frequency signal.

A speaker 18, a microphone 19, and a dial key 20 are connected to the control unit 12 via a man-machine interface 17. The speaker 18 and the microphone 19 constitute a handset and the dial key 20.
And other operations can be performed, and ISDN
A call using the line i can be made.

The control unit 12 has a dial memory 21.
And a data memory 22 are connected. The dial memory 21 stores data on abbreviated dialing used when making a call by operating the dial key 20 or the like, and the data memory 22 stores data on each slave unit. The data regarding each slave unit includes a dial-in number, a sub address, an attribute, and the like set for each slave unit. Each of these data is I
The direct dial-in number (DDI) is set for each slave unit separately from the dial number set for each user. By performing a calling operation with this direct dial-in number using a dedicated dial number, only the corresponding child device can be called. The sub-address is a unique number set for each slave unit. By inputting the sub-address following the dial number set for each user at the time of calling, only the corresponding slave unit can be called. The attribute is for each slave unit (or device connected to the slave unit)
The data indicating the attributes of, for example, a slave unit capable of normal telephone calls, a slave unit capable of high-quality voice communication, a slave unit connected to a facsimile device, a slave unit connected to a telex device, and a videotex unit. The type of the connected child device or the like is shown. Further, various data indicating the lower layer compatibility and various data relating to the higher layer compatibility are stored in the data memory 22 as other data indicating this attribute.

FIG. 2 shows an example of the storage state of these data in the data memory 22 . A terminal number is pre-assigned to the base unit of the cordless telephone of this example and each slave unit, and a storage area for a sub-address, a direct dial-in number (DDI) and an attribute is prepared for each terminal number, and the sub-address is arbitrary. The direct dial-in number is set with four digits.
In this case, only the terminal registered in the telephone station is set as the direct dial-in number.

When the master unit also has a setting such as a direct dial-in number, a sub address, and an attribute, the data is also stored in the data memory 22. In addition, IS
If there is other data necessary to execute various services possible by the DN, the data is also stored in the data memory 22.

Next, FIG. 3 shows the overall system configuration of this cordless telephone. In this example, one base unit 10 is used.
, Five slave units 31, 32 ‥‥ 35 are prepared, and between the antennas 41, 42 ‥‥ 45 connected to the respective slave units 31, 32 ‥‥ 35 and the antenna 15 of the base unit 10. Wireless communication is performed. In this case, the first slave unit 31 and the second
The slave unit 32 is a telephone capable of making a telephone call with normal voice, and includes a speaker, a microphone, and a dial key constituting a receiver. In addition, the third slave unit 33 is connected to the facsimile machine 51 and can transmit and receive documents. Further, the fourth slave unit 34 includes the telex device 5.
2 is connected, and transmission and reception of character data and the like are possible. The fifth slave unit 35 is a videotex unit 5
3 is connected, and image data and the like can be transmitted and received. Data relating to signals handled by each of the slave units is stored in the data memory 22 described above in advance. In the case of the telephones 31 and 32 capable of making voice calls, if one of the telephones is a telephone for high-quality voice, data relating to this is also stored in the data memory 22.

The operation in the case where there is an incoming signal on the ISDN line i using the cordless telephone configured as described above will be described. The incoming signal of the ISDN includes various call setup messages. The determination is made by the ISDN interface 11 and the result of the determination is
Feed to 2. Here, the operation of determining the call setting message is shown in the flowchart of FIG. 4. First, the protocol identifier of the incoming signal is checked by the ISDN interface 11 (step 101). When the protocol identifier is correctly determined, the message is added to the message. The control unit 12 determines whether or not there is a direct dial-in number (called number) (step 102). When there is a direct dial-in number, the control unit 12
From the stored data of 2, it is determined whether or not there is a slave (terminal) in which the designated direct dial-in number is set (step 103). Then, the corresponding slave unit (the first slave unit 3)
If there is any of the first to fifth slave units 35), it is further determined whether or not a sub-address is specified in the message (step 104). When the sub-address is specified, the control unit 12 detects, from the data stored in the data memory 22, the slave set with the designated sub-address, and the detected slave is indicated by the direct dial-in number. It is determined whether or not it is the same as the slave (step 105). If they are the same, it is determined that there is transmission of an incoming signal to the slave specified by the direct dial-in number and the subaddress, and if the attributes described later match, the incoming call is transmitted to the corresponding slave by radio signal. Transmit the request. Then, when the receiving operation is performed by the child device corresponding to the incoming call request, an incoming signal subjected to predetermined processing is transmitted, and the receiving operation of the incoming signal is executed by this child device (step 106).

If no sub-address is specified in step 104, and if the attributes described later match, an incoming call request is transmitted by radio signal to the slave specified by the direct dial-in number. Then, when the receiving operation is performed by the child device corresponding to the incoming call request, an incoming signal subjected to predetermined processing is transmitted, and the receiving operation of the incoming signal is executed by this child device (step 106).

If it is determined in step 102 that there is no direct dial-in number, it is next determined whether or not a sub-address is specified in the message (step 107). Then, when the sub-address is specified, the control unit 12 uses the data stored in the data memory 22
It is determined whether or not there is a slave set with the designated sub-address (step 108). Then, when there is an applicable slave, when an attribute described later matches, an incoming request is transmitted to the slave specified by the sub-address, and when the receiving operation is performed by the applicable slave according to the incoming request, The incoming signal having undergone the predetermined processing is transmitted, and the slave unit performs an incoming signal receiving operation (step 106).

In addition, when the protocol identifier cannot be correctly determined in step 101, when it is determined that there is no slave unit corresponding to the direct dial-in number specified in step 103, and when the direct dial-in number is determined in step 105, When the designated slave unit and the slave unit designated by the sub-address do not match, and when it is determined in step 108 that there is no slave unit corresponding to the designated sub-address, all messages relating to the direct dial-in number and the sub-address are sent. Ignore (Step 10
9).

After processing the message relating to the direct dial-in number and the sub address, when the corresponding child device is detected and the process goes to step 106, identification by attribute is performed, and only when the attribute matches, the corresponding child device is identified. To perform the operation of receiving the incoming signal. That is, as shown in the flowchart of FIG. 5, the attribute is determined from the message of the incoming signal (step 201), and the child device designated by either or both of the direct dial-in number and the subaddress is assigned the attribute indicated by the message. It is determined whether the attribute matches. For example, it is determined whether the transmission capability of each slave unit matches the incoming signal. Also,
It is determined whether attributes such as low-layer compatibility and high-layer compatibility match the incoming signal.

Here, when the attributes match, signal processing is performed with the corresponding attribute (step 202). Also,
If the attributes do not match, the message relating to the attribute is ignored (step 203).

Also, when all the messages relating to the direct dial-in number and the sub-address are ignored in step 109 described above, the attribute is determined in the same manner, and it is determined whether or not there is a slave unit having the attribute that matches the incoming signal. . At this time, when there is a slave unit having the matching attribute, the process regarding the slave unit having the matching attribute is performed. That is, after transmitting the incoming call request to the slave unit having the matching attribute, the incoming operation is performed and then the incoming signal subjected to the predetermined processing is transmitted, and the receiving operation of the incoming signal is executed by this slave unit. For example, when the message of the incoming signal does not specify the direct dial-in number and the sub-address, and indicates that it is a facsimile signal in the attribute, the incoming signal is transmitted only to the third slave unit 33 to which the facsimile device 51 is connected. .

As described above, according to the cordless telephone of this embodiment, the ISDN interface 11 is provided only on the base unit 10 side.
Despite the configuration provided with the
Various services that can be performed by the DN are executed. That is, when a message related to the direct dial-in number and the sub address or a message related to the attribute is included in the incoming signal, a process corresponding to the message is executed under control based on data stored in the data memory 22 provided in the base unit 10, and Corresponding processing is performed without judging this message on the handset side, and the configuration of the cordless telephone that can be connected to the ISDN line is simplified. In this case, regardless of the number of slaves, the ISDN interface 11
Suffices to provide only one, so that the configuration is simpler than in the past, especially when the number of slaves is large. In addition, each slave unit
There is no need to make any SDN-related correspondence, and there is no need to store direct dial-in numbers and sub-address numbers in each handset, so use the handset of a cordless telephone device for analog telephone lines that has been widely used. For example, when connecting an ISDN line to a cordless telephone device for an analog telephone line installed in each home, it is only necessary to replace or modify only the base unit with a corresponding one, and the versatility is high.

In the above-described embodiment, only the case where the reception is performed by each slave unit has been described. However, when the reception is performed by the receiver (speaker 18 and microphone 19) connected to the base unit 10 via the man-machine interface 17. Similarly, I
Of course, various services that can be realized by SDN can be realized.

In the above-described embodiment, only the process at the time of incoming call has been described. However, at the time of outgoing call, various processes corresponding to ISDN may be performed on the master unit 10 side. For example, based on the data stored in the data memory 22, a message to be added to the transmission signal
What is necessary is just to make it by the N interface 11 and to transmit it to the ISDN line i. In this case, the message includes an attribute of the transmitted slave, a transmission number, a transmission subaddress, a subaddress instructed at the time of transmission, and the like. That is, for example, when the attribute of the transmitted slave unit and the transmission sub-address are added to the message, the control unit 12 determines the transmitted slave unit, reads the data relating to the determined slave unit from the data memory 22, and sets the attribute. Is determined, and the determined attribute and subaddress (originating subaddress) are added to the message.

Further, the present invention is not limited to the above-described embodiment, but may take various other configurations.

[0031]

According to the present invention, when a communication device such as a cordless telephone for performing wireless communication between a main telephone device and a sub telephone device is connected to a digital line such as an ISDN, the main telephone device includes the incoming signal in an incoming signal. the attribute can control the secondary telephone device based on the sub-address or direct dial-in number, of the incoming signal in each sub-telephone apparatus attributes, without detecting the sub-address or direct dial-in number, the receiving terminal, such as a selected The service can be received, and the configuration of each sub telephone device can be simplified. Ma
In addition, attributes and sub-ad
Address or direct dial-in number from the main telephone
Can send.

[Brief description of the drawings]

FIG. 1 is a configuration diagram illustrating a base unit of a cordless telephone according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an example of a storage state of a data memory according to one embodiment of the present invention.

FIG. 3 is a configuration diagram showing a system configuration of a cordless telephone according to an embodiment of the present invention.

FIG. 4 is a flowchart for explaining one embodiment of the present invention.

FIG. 5 is a flowchart for explaining one embodiment of the present invention.

FIG. 6 is a configuration diagram showing an example of a conventional cordless telephone.

[Explanation of symbols]

 Reference Signs List 10 master unit 11 ISDN interface 12 control unit 22 data memory 31 first slave unit 32 second slave unit 33 third slave unit 34 fourth slave unit 35 fifth slave unit 51 facsimile device 52 telex device 53 video Tex equipment i ISDN line

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) H04M 11/00-11/10 H04M 1/72 H04M 3/42 H04Q 7/38

Claims (2)

(57) [Claims] A communication device comprising: a main telephone device connected to a digital line; and a plurality of sub telephone devices capable of wirelessly transmitting and receiving to and from the main telephone device. attribute, a memory for storing subaddress and direct dial-in number provided, attributes the main telephone device is included in the incoming signal at the time of incoming call, to detect the sub-address or direct dial-in number, the attribute, the sub-address or direct dial-in number A communication device that determines the corresponding sub telephone device from the data stored in the memory, and transmits the incoming signal to the sub telephone device. 2. A main telephone device connected to a digital line.
And a plurality of sub-phones capable of wirelessly transmitting and receiving with the main telephone device
In the communication device, the attributes and sub-addresses of the sub telephone devices are stored in the main telephone device.
And the memory for storing direct dial-in numbers.
When calling from any of the sub-telephone devices
The main telephone device reads the memory read from the memory.
Attributes, subaddress or direct dial of secondary telephone device
Read out the call-in number, and
The feature is to send to the above digital line by adding to the information
Communication device.